Ventilator



Jan. 19 1926. 1,570,089

A. L. SCHWARTZBERG VENTILATOR Filed April 10, 925

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UNITED STATES ALTER L. SCHWARTZBERG, OF SHREVEPORT, LOUISIANA.

VENTILATOR.

Application filed 'April 10, 1925.. Serial No. 22,156.

To all whom it may concern Be it known that I, ALTER L. SCHWARTZ- BERG, a citizen of the United States, residing at Shreveport, in the parish of Caddo and State of Louisiana, have invented certain new and useful Improvements in Ventila tors, of which the following is a specification.

This invention relates to ventilators, and has more particular reference to an improvement in window ventilators.

Theprinary object of the invention is to provide a ventilator which is so constructed as to freely admit suflicient fresh air into a building where large crowds gather, such as motion picture theaters and the like, and yet so constructed as to effectively prevent the entrance of rain and light under normal conditions.

Another object is to provide a ventilator of the above character which is simple and durable in construction as well as efiicient and reliable in operation.

With the above general objects in view, and others that will become apparent as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing, wherein like reference characters indicate corresponding parts throughout the several views,

Figure 1 is a fragmentary elevational view of a window equipped with a lower sash constituting a ventilator constructed in accordance with the present invention.

Figure 2 is a vertical sectional view taken substantially upon line 2-2 of Figure 1.

Figure 3 is a fragmentary perspective view showing the upper portion of the ventilating sash removed from the window frame, and

Figure 4 is a fragmentary vertical sectional view of the sash drawn on a larger scale.

While the present invention is capable of general application, the same is herein shown as embodied in the lower sash of a window having a frame F and a conventional vertically sliding upper sash S.

The ventilator shown embodies a rectangular frame 5 having the upper ends of the side frame bars thereof formed with grooves 6 for connection with the usual weighted sash cords 7 of a window sash.

Mounted within the frame 5'are spaced inner and outer series of horizontal slats, the slats of each series being arranged in spaced vertical relation, and the upper portions of the slats 8 of the outer series 'overla ping the lower portions of the slats 9 of t e inner series as clearly shown in Figures 2 and 4. Furthermore, the lower edges of the slats 8 of the outer series are arranged in planes slightly spaced above the lanes of the upper edges of the slats 9 of t e inner series. By this arrangement of the slats narrow spaces are provided as indicated by the arrow lines 10 for ermitting free entrance of fresh air moving in substantially a horizontal direction or plane, while reventing the free entrance of rain and light as indicated by the line 11 in Figure 4. The latter fact is apparent when it is considered that rain, in falling, rarely travels at a greater angle to the perpendicular than is represented by the line 11, and this is also true with respect to rays of light.

The slats are rigidly mounted in the frame in any desired manner, but as shown, each slat is composed of a ,pair of sections arranged in end to end relation and having their adjacent inner ends supported by an intermediate vertical frame bar 12.

From the above it will be seen that under normal conditions light and rain will be effectively excluded while the free entrance of a material or appreciable quantity of air 1s permitted by a window ventilator constructed in accordance with the present invention. Also, the spacing of the lower edges of the slats of the outer series relative to .the upper edges of the slats of the inner series may be varied according to conditions to be met with so that excessive entrance of air will be prevented during cold weather.

Minor changes may be made -without departing from the spirit and scope of the invention as claimed.

What I claim as new is:

1. A ventilator including spaced inner and outer series of horizontal slats, the slats of each series being arranged in spaced vertical relation, the upper portions of the slats of the outer series overlapping the lower portions of the slats of the inner series, and the lower edges of the slats of the outer series being arranged in planes slightly spaced above the planes of the upper edges of the slats of the inner series.

2. A window ventilator comprising a rectangular frame having s aced mner and outer series of horizonta slats rigidly mounted therein, the slats of each series 8 being arranged in spaced vertical relation, the upper Portions of the slats of the outer series over apping the lower ortions of the slate of the inner series, and t e lower edges of the slats of the outer series being arranged in planes slightly spaced above the planes of the up er edges of the slats of the inner series, t e slats of both series being arranged in vertical. arallel relation.-

In testimony whereof afiix my signature.

ALTER L. SCHWART Z BERG. 

